H.A.C.A

The process involves the force of water against the coast. The waves enter cracks (faults) in the coastline and compress the air in the crack expands quickly causing a minor explosion. The process is repeated continuously.

Corrosion

This is the chemical action of sea water. The acids in the salt water slowly dissolve rocks on the coast. Limestone and chalk are particularly prone to this process.

Attrition

Material carried by the waves bump into each other and so are smoothed and broken down into smaller particles

Abrasion

This is the process by which the coast is worn down by material carried by the waves. Waves throw these particles against the rock, sometimes at high velocity